JP2905507B2 - Particle classification method and apparatus - Google Patents

Particle classification method and apparatus

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JP2905507B2
JP2905507B2 JP22153289A JP22153289A JP2905507B2 JP 2905507 B2 JP2905507 B2 JP 2905507B2 JP 22153289 A JP22153289 A JP 22153289A JP 22153289 A JP22153289 A JP 22153289A JP 2905507 B2 JP2905507 B2 JP 2905507B2
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classification
portion
inverted cone
cylindrical portion
particle
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JPH0386258A (en )
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募 吉田
雅人 田村
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ライオン株式会社
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【発明の詳細な説明】 産業上の利用分野 この発明は上昇流粒子分級方法及びその装置に関する。 DETAILED DESCRIPTION OF THE INVENTION BACKGROUND OF THE The present invention relates to an upflow particle classification method and apparatus.

従来の技術 上昇流粒子分級方法は、いわゆる沈降分級法の一種であり、流体中に分散している粒子の沈降速度υは、静止流体の場合、 ART upflow particle classification method is a kind of so-called sedimentation classification method, the sedimentation velocity υ of particles dispersed in a fluid, in the case of static fluid, として与えられる。 It is given as.

ここでDは粒子の直径、ρ及びρ はそれぞれ粒子及び分級用分散媒の密度、ηは分級用分散媒の粘度、gは重力の加速度である。 Where D is the density of each particle diameter, [rho and [rho 0 is the particle and classification for the dispersion medium, eta is the viscosity of the classification for the dispersion medium, g is the acceleration of gravity.

このことから一定の粒子の沈降速度υは粒子と分級用分散媒との密度差ρ−ρ に比例し、分級用分散媒の粘度に反比例し、粒子の直径の2乗に比例して沈降することがわかる。 The sedimentation velocity υ certain particles since proportional to the density difference [rho-[rho 0 and classifying the dispersion medium for the particles is inversely related to the viscosity of the classification for the dispersion medium, precipitation in proportion to the square of the particle diameter it can be seen that.

ところで前記上昇流粒子分級法では、上部の円筒形部に連設する下部の逆円錐形部を有する分級管に粒子分散液を装入し、逆円錐形部の下部から分級用分散媒を流入して上昇させ、その上昇速度と等しい沈降速度をもつ粒子を境にして、大粒子は沈降し、小粒子は上昇して分級される。 In the way the upflow particle classification method, charged particles dispersion classifying tube having an inverted conical section of the lower part is continuously provided on top of the cylindrical portion, the inflow classification for the dispersion medium from the lower portion of the inverted cone-shaped portion It was raised to, and the particles having the increased speed equal settling velocity as a boundary, the large particles settle, small particles are raised to classification.

発明が解決しようとする課題 このようなことから、この上昇流粒子分級方法においては、所定の粒径以下の粒子群を分級するにはその沈降速度以下の流速をもって分級用分散媒を流入しなければならないため、その流入時間は長時間にわたり多量の分級用分散媒を必要とし、このようにして分級管から溢流した分級用分散媒から粒子を回収するに当っては、この多量の分級用分散媒の処理が必要になるという問題がある。 Invention since it is like this problem to be solved, in the upflow particle classification method, classifying the particles below a predetermined particle size or less is required to flow into the classification for the dispersion medium with the following flow rates that sedimentation rate since there Banara, and the inflow time over time requires a large amount of classification for the dispersion medium, it is hitting the recovered particles from the manner and overflow from classifying tube classifying a dispersion medium for the large amount of classification there is a problem that the processing of the dispersion medium is required.

そこでこの発明の目的は、前記のような従来の上昇流粒子分級方法のもつ問題を解決し、流入する分級用分散媒の量を低減して処理時間を短縮し、分級用分散媒の全体の量を低減してその処理を容易にすることのできる分級方法及びその装置を提供することである。 Accordingly, an object of the present invention is to solve the problem with conventional upflow particle classification method as described above, to reduce the amount of classifying the dispersion medium for the flowing by reducing the processing time, the overall classification for the dispersion medium is that by reducing the amount to provide a classification method and apparatus capable of facilitating the processing.

課題を解決するための手段 この発明は、前記のような目的を達成するために、従来形式の分級管に粒子分散液を装入したうえ、その下部から分級用分散媒を流入して上昇させ、上部から被分級粒子を含む液を溢流させるに際し、分級管の下部に超音波を作用させるものである。 SUMMARY This invention for solving, in order to accomplish the above objects, after having charged the particle dispersion in the classifying tube conventional type, is raised by introducing the classified dispersion medium from the lower portion are those upon to overflow the liquid containing the grain fractions from the top, the action of ultrasonic waves at the bottom of the classifying tube.

さらにこの発明は前記のような分級方法を実施するために、分級管の下部の逆円錐形部に超音波を作用させる超音波発生器を設けている。 Further the invention for carrying out the classification above method, the inverted cone shape of the bottom of the classifying tube is provided an ultrasonic generator which applies an ultrasonic wave.

そしてその分級管にあっては、逆円錐形部の長さが円筒形部の直径の1ないし12倍の間にあり、その内径は円筒形部の外径の1/5以下となっている。 And there on the classification tubes, the length of the inverted cone shaped part is between 1 to 12 times the diameter of the cylindrical portion, an inner diameter which is 1/5 or less of the outer diameter of the cylindrical portion .

作用 分級管内に粒子分散液を装入したうえ、同分級管の下部の逆円錐形部の下部からポンプにより分級用分散媒を一定の流速で流入して、該分級管内を上昇させ、それと同時に超音波発生器によって、逆円錐形部に超音波を作用させ、この分級管において所定の粒子の分級を行った後、上部の円筒形部から残りの被分級粒子を含む液を溢流させることとなる。 After having charged particle dispersion to the action classification tube, and the classification for the dispersion medium by a pump from the bottom of the inverted cone shape of the bottom of the classifying tube flows at a constant flow rate, increasing the 該分 grade tube, at the same time the ultrasonic generator, the inverted cone shaped portion by the action of ultrasonic waves, after classification of a given particle in the classifying tube, thereby overflow of liquid containing the remaining of the grain fractions from the top of the cylindrical portion to become.

実施例 第1図に示すこの発明の実施例において、1は分級管を示し、この分級管1は上部の円筒形部2と、これに連設する下部の逆円錐形部3とをもっている。 In embodiments of the invention shown in FIG. 1 embodiment, 1 indicates the classification tube, this classification tube 1 has a cylindrical portion 2 of the upper, and an inverse conical portion 3 of the lower communicating set thereto. 逆円錐形部3の下端には分級用分散媒供給口5が設けられ、この分散媒供給口5には定量ポンプ4により配管6を介して分級用分散媒が供給され、円筒形部分2の上端には溢流口7が設けられ、この溢流口7に配管8が連結されている。 The lower end of the inverted cone-shaped part 3 is provided classification for the dispersion medium supply port 5, the classification for the dispersion medium through the pipe 6 by a metering pump 4 is supplied to the dispersion medium supply port 5, the cylindrical portion 2 overflow opening 7 is provided in the upper end, the pipe 8 is connected to the overflow opening 7. そしてこの配管8の出口は図示しない次段階の直径がより大きい円筒形部を有する分級管の逆円錐形部の分級用分散媒供給口に連結され、このようにして粒度区分に応じて順次直径が大きくなっている分級管をもつものを複数個配置することとなる。 And this outlet pipe 8 the diameter of the next stage (not shown) is connected to the classifying dispersion medium feed opening of the inverted cone shaped portion of the classifying tube having a larger cylindrical portion, sequentially diameter depending on particle size classification in this manner and thus arranging a plurality of those with the classification tube is increased.

前記のような分級装置は従来のものと変るところがないが、この発明の分級装置にあっては、逆円錐形部3の下部に超音波を作用する超音波発生器10が設けられ、この超音波発生器10は内部に液体が収納された水槽11を形成し、この水槽11内にさらに超音波伝達用補助水槽12が収容され、この補助水槽12内に分級用分散媒供給口5を含む逆円錐形部3が収容されている。 Said classification device, such as but is not different from the conventional, in the classification device of the present invention, the ultrasonic generator 10 is provided which acts ultrasound at the bottom of the inverted cone-shaped part 3, the super wave generator 10 forms a water tank 11 the liquid is housed inside, the ultrasonic transmission auxiliary water tank 12 further to the tub 11 is accommodated, comprising a classifying dispersion medium supply port 5 in the auxiliary water tank 12 inverted cone shaped portion 3 is accommodated.

前記のものにおいて、円筒形部2の内径をD、逆円錐形部3の長さをL、供給口5の内径をdとすると、これら相互の関係は、L=(1〜12)D、d<1/5Dとなるのが好ましい。 In one of the, if the inner diameter of the cylindrical portion 2 D, the length of the inverted cone-shaped part 3 L, the inner diameter of the supply port 5 and d, these mutual relationship, L = (1~12) D, d <preferable to a 1 / 5D. この場合、円筒形部2の長さは特に関係なく、逆円錐形部3の長さLが前記より短いと分級精度が劣化し、また長くとも効果がなく、供給口5を前記のようにすることにより、分級操作時に堆積しない等のことがわかった。 In this case, the length of the cylindrical portion 2 is no particular relationship, the length L of the inverted cone-shaped part 3 is classification precision deterioration shorter than the also ineffective at the longest, the supply port 5, as described above by, it was found that such is not deposited at the time of classification operation. また超音波発生器10の出力は30〜200Wとするのがよく、その中でどのような出力とするかは、分級管1の大きさによって決まり、また水槽12内における逆円錐形部3の長さは逆円錐形部3全体の長さの約2/3以下とするのがよいが超音波発生器10の出力及び分級管の大きさ等によってその範囲内から選択される。 The output of the ultrasonic generator 10 may have to the 30~200W, is either a what output therein, of the classifying tube 1 determined by the size, also of inverted cone shaped portion 3 of the 12 water tank the length is preferably set to about 2/3 or less of the inverted cone shaped portion 3 overall length selected within that range by the size of the output and classification pipe of the ultrasonic generator 10.

前記のような分級装置によって分級作業を行うに当っては、分級管1内に粒子分散液を装入したうえ、逆円錐形部3の分級用分散媒供給口5からポンプ4により、配管6を介して分級用分散媒を一定速度で流入させるとともに、超音波発生器10で発生した超音波を水槽11,12中の水を介して逆円錐形部に作用させる。 It is hit to do classification work by classification apparatus as described above, after having charged the particle dispersion in the classifying tube 1 by the pump 4 from the classification for the dispersion medium supply port 5 of the inverted cone-shaped part 3, the pipe 6 with flowing the classification for the dispersion medium at a constant speed through the, the ultrasonic waves generated by the ultrasonic generator 10 is applied to the inverted cone-shaped part through the water in the water tank 11, 12. このようにして超音波の作用下に分散媒は分級管1内を上昇し、この間分散媒の流速より大きな沈降速度を有する粒子は勿論、 In this way, the dispersion medium under the action of ultrasonic waves increases the classifying tube 1, particles having a settling velocity than the flow rate during this period the dispersion medium, of course,
それより小さな沈降速度のものであっても特定範囲内の粒子が分級され、このようにして同一流速すなわち同一流量の分散媒により、従来のものが分級した粒度以上の粒子を分級することとなる。 The particles within a certain range even it those from small settling velocity is classified by the dispersion medium of the same flow rate i.e. the same flow rate in this manner, so that the conventional ones have classifying classified particle size more particles .

この場合被分級粒は、染料、化粧品用素材、薬剤、鉱物、セラミックスまたは合成ダイヤモンドからなり、その粒径は40μm以下、好ましくは20μm以下の粒径を有するのがよい。 In this case the classification grains, dyes, cosmetic materials, it agents, minerals, ceramics, or synthetic diamond, the particle size is 40μm or less, preferably has a particle size of 20μm or less.

発明の効果 この発明は前記のように、従来形式の分級管に粒子分級液を装入したうえ、その下部から分級用分散媒を流入して上昇させ、上部から被分級粒子を含む液を溢流させるに際し、分級管の下部に超音波を作用させるので、同一流量の分級用分散媒を適用することにより従来分級することができた以上の粒度の粒子の分級が可能となり、 Effect of the Invention The present invention as described above, spilled after having charged particle classification solution classifying tube conventional type, is raised by introducing the classified dispersion medium from the lower portion, a liquid containing the grain fractions from the top upon causing flow, since the action of ultrasonic waves at the bottom of the classifying tube enables classification more than could be conventional classification of the particle size of the particles by applying a classification for the dispersion medium of the same flow rate,
このことによって分級時間を短縮して、分級用分散媒の量及び粒子分散液から分級粒子を回収する際の処理量を低減し、このようにして分級用分散媒が低減されることから、分級された高濃度分級液がえられ、全体として分級経費を大きく、節約できる等の効果がある。 By shortening the classified time by this, to reduce the processing amount at the time of collecting the classified particles from the amount of classification for the dispersion medium and the particle dispersion, since this way classification for the dispersion medium is reduced, the classification by high concentrations classification solution is example was largely classified cost as a whole, the effect of such savings.

実験例 前記のような実施例を使用して行った実験例につき説明する。 Be explained experimental example was carried out using the embodiment as in Experimental Example above.

分級試料は11μm以下の粒子よりなる合成ダイヤモンドであり、分級管1は、円筒形部2の内径D=5cm、同長さl=5cm、逆円錐形部3の長さL=45cm、同分級用分散媒供給口5の内経d=1mmとした。 Classifying the sample is a synthetic diamond made of particles less than 11 [mu] m, the classifying tube 1, the inner diameter D = 5 cm of the cylindrical portion 2, the length l = 5 cm, the inverted cone shaped section 3 length L = 45cm, the classification and the inner through d = 1mm of use dispersion medium supply port 5.

(1)第1実験例 前記試料約2gを分級管1に入れて0.05%のメタリン酸ナトリウム水溶液を、ポンプ4によって分級管1内に流入させ、超音波を作用させない場合と、させた場合とで分級を行い、その際の分級用分散媒の流入量と、溢出粒子の最大径との相関関係を求めた。 (1) a first experimental example wherein the sample of about 2g of classifying tube 1 to put 0.05% metaphosphoric acid aqueous solution of sodium flowed into the classifying tube 1 by a pump 4, and if not applied ultrasound, if allowed to the in and classified, it was calculated and inflow of classifying the dispersion medium for the time, the correlation between the maximum diameter of extravasation particles. その結果は第2図において、作用させない場合については曲線A、作用させた場合については曲線Bにみられるとおりである。 In the result the second view, the curve A for the case of not act, in the case an acting is as seen in curve B.

Aの場合の分級分散媒の流入量V1=0.41D 2であり、B A is a flow rate V1 = 0.41D 2 classification dispersion medium in the case of, B
の場合はV2=0.28D 2であるから、超音波を作用させたことによる分級用分散媒の減少割合は、V2/V1≒0.68ということになり、約2/3に低減されたことがわかる。 Since the case of a V2 = 0.28D 2, reduction ratio of classifying the dispersion medium for by an acting of ultrasound, will be referred to as V2 / V1 ≒ 0.68, it can be seen that that is reduced to about 2/3 .

(2)第2実験例 試料2g、分級用分散媒の流入量を6ml/minで分級し、 (2) classified in the second experimental example sample 2g, classification dispersion medium inflow of 6 ml / min,
分級管1内に残存した1μm以下の粒子の減少情況を調べた。 It was investigated reduction context of remaining 1μm or less of the particles in the classifying tube 1. その結果は超音波を作用させた場合は、7時間で1μm以下の粒子はなくなり、作用させなかった場合に粒子がなくなるのに要した時間は17時間であった。 As a result when allowed to act ultrasound is no longer smaller particles 1μm in 7 hours, time required for the particles is eliminated if not allowed to act was 17 hours.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1図はこの発明の実施例の概略説明図、第2図はこの発明と従来例とにおける分級用分散媒の流入量と、溢出粒子の最大径との相関関係を示すグラフである。 Schematic illustration of FIG. 1 is an embodiment of the present invention, FIG. 2 is a graph showing the flow rate of the classifying dispersion medium in the present invention and the conventional example, the correlation between the maximum diameter of extravasation particles. 1……分級管、2……円筒形部 3……逆円錐形部、4……ポンプ 5……分級用分散媒供給口 6……配管、7……溢流口 8……配管、10……超音波発生器 1 ...... classifying tube, 2 ...... cylindrical portion 3 ...... inverted cone shaped portion, 4 ...... pump 5 ...... classifier dispersion medium feed port 6 ...... pipe, 7 ...... overflow outlet 8 ...... pipe, 10 ...... ultrasonic generator

Claims (3)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】上部の円筒形部に連設する下部の逆円錐形部を有する分級管に粒子分散液を装入し、逆円錐形部の下部から分級用分散媒を流入して上昇させ、円筒形部の上部から被分級粒子を含む液を溢流させる粒子分級方法において、分級時に逆円錐形部に超音波を作用させることを特徴とする粒子分級方法。 1. A charged particle dispersion classifying tube having an inverted conical section of the lower part is continuously provided in the cylindrical portion of the upper, it is raised by introducing the classified dispersion medium from the lower portion of the inverted cone-shaped portion in particle classification method for overflow of the liquid containing the object to be classified particles from the top of the cylindrical portion, particle classification method characterized by the action of ultrasonic waves in the opposite conical portion during classification.
  2. 【請求項2】上部の円筒形部に下部の逆円錐形部を連設し、円筒形部の上部に被分級粒子含有液の溢流口を、逆円錐形部の下部に分級用分散媒の流入口を具えた分級管を有する粒子分級装置において、前記逆円錐形部に超音波を作用させる超音波発生器を設けたことを特徴とする粒子分級装置。 2. A continuously provided the inverted cone shape of the lower part cylindrical portion of the upper, the overflow outlet of the grain fractions containing liquid on top of the cylindrical portion, classifying the dispersion medium for the bottom of the inverted cone-shaped portion of the particle classification device having an inlet for classifying tube equipped, particle classification apparatus, characterized by comprising an ultrasonic generator which applies an ultrasonic wave to the inverse conical portion.
  3. 【請求項3】分級管は、逆円錐形部の長さが円筒形部の直径の1ないし12倍の間にあり、逆円錐形部の内径が円筒形部の外径の1/5以下である請求項2に記載の粒子分級装置。 3. A classifying tube is between the length of the inverted cone shaped portion is 1 to 12 times the diameter of the cylindrical portion, the inner diameter of the inverted cone shaped portion is less 1/5 of the outer diameter of the cylindrical portion particle classifier according to claim 2 it is.
JP22153289A 1989-08-30 1989-08-30 Particle classification method and apparatus Expired - Fee Related JP2905507B2 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN102921527A (en) * 2012-11-16 2013-02-13 鞍钢集团矿业公司 Ore pulp stirring rank with ultrasonic wave generator

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US7740666B2 (en) 2006-12-28 2010-06-22 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US7673516B2 (en) 2006-12-28 2010-03-09 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid treatment system
US7712353B2 (en) 2006-12-28 2010-05-11 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid treatment system
US9421504B2 (en) 2007-12-28 2016-08-23 Kimberly-Clark Worldwide, Inc. Ultrasonic treatment chamber for preparing emulsions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102921527A (en) * 2012-11-16 2013-02-13 鞍钢集团矿业公司 Ore pulp stirring rank with ultrasonic wave generator

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